Seiko Cal. 4528 - 677

Seiko 4528-677

The Seiko 4528-677 represents an important milestone in Seiko's 1967 lineup. Powered by the 4528 caliber with 23j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-7373659462ed]

Also known as: UFO, Baby Tuna

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
15.8mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
110m
Dial Color
Black
Jewels
23j
Frequency
36,000 bph
Power Reserve
69 hours
Year
1967

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